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US 6,772,859 B2Granted
Embodiments of aperiodic tiling of a single asymmetric diffusive base shape
AssigneeRPG Diffusor Systems, Inc.
InventorsPeter D'Antonio, Trevor J. Cox
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AssigneeRPG Diffusor Systems, Inc.
InventorsPeter D'Antonio, Trevor J. Cox
Estimating the term…
Embodiments of aperiodic tiling of a single asymmetrical diffusive base shape employ welled or stepped one-dimensional or two-dimensional diffusors, a single or compound curved surface, or an aperiodic geometrical form. Surfaces are tiled in any orientation offering an unlimited number of tiling patterns. In the preferred embodiments of the present invention, a smooth transition between adjacent “tiles” is achieved. Using a single tileable asymmetric base shape reduces the number of shapes requiring manufacture while allowing modulation. The present invention even contemplates extending the inventive techniques into three-dimensional shapes to form volume diffusors. The technique employed to design diffusors to be used in accordance with the teachings of the present invention may rely upon visual appearance, a random sequence, a number theory sequence, or use of an optimization program.
A sound diffusor comprising an aperiodic array of diffusor modules including a first module having an asymmetrical surface pattern oriented in a first orientation and at least a second module having the same surface pattern as that of the first module but oriented in a second orientation, said modules combining together to diffuse sound waves with (1) enhanced diffusion, and (2) scattered energy lobing minimized as compared to diffusion and scattered energy lobing that would occur were the modules all oriented in said first orientation.
A sound diffusor comprising an aperiodic array of diffusor modules including a first module having an asymmetrical surface pattern oriented in a first orientation, a second module having the same surface pattern as that of the first module but oriented in a second orientation, a third module having said asymmetrical surface pattern and oriented in a third orientation, and a fourth module having said asymmetrical surface pattern and oriented in a fourth orientation, each module comprising a two-dimensional diffusor having a multiplicity of wells formed by flat, two-dimensional surfaces, said flat, two-dimensional surfaces being formed by walls of square cross-section blocks, each module being square.
A sound diffusor comprising an aperiodic array of diffusor modules including a first module having an asymmetrical surface pattern oriented in a first orientation and at least a second module having the same surface pattern as that of the first module but oriented in a second orientation, each module being rectangular, said second orientation is rotated 180° with respect to said first orientation, each module comprising a one-dimensional asymmetrical series of wells, said series including a first half well, a last half well, and a plurality of full wells between said half wells, said first and last half wells having a depth of zero, and said plurality of full wells comprising seven wells having respective consecutive depths equal to or proportional to the following amounts in inches:
Dependencies are inferred from the claim text.